fastbob Posted November 24, 2020 Share Posted November 24, 2020 1 hour ago, Ian Frog said: Not wishing to be pedantic but that is £140 odd for a new camchain. Is that an endless camchain entailing engine out or are they using a soft link and feeding the new one through and just refreshing the top end? I see no evidence of cylinder head and base gaskets, oil and other items associated with an engine strip. I would be interested in someone like @fastbob`s thinking on this. Cheers Ian You missed my link . A genuine endless camchain is £17 What puzzles me is what exactly is wrong with the camchain ? It's hardly likely to be stretched or worn at 5000 miles . I'd probably stick a manual tensioner on it to see what happens . 1 Quote Link to comment Share on other sites More sharing options...
dynax Posted November 24, 2020 Share Posted November 24, 2020 I have uploaded to a file hosting site, but will expire after a week, so download asap, it is only a service manual but it seems very comprehensive and should give you a good start to troubleshoot and service your bike https://filebin.net/v1ra3hry1fymhwj6 1 Quote Link to comment Share on other sites More sharing options...
TimR Posted November 24, 2020 Share Posted November 24, 2020 (edited) To all those chastising the OP for their lack of mechanical aptitude/ability WTF ? Not everyone wishes to undertake such a job or has the ability to either through lack of knowledge or workspace or tools or even all three. With regards to the cost look at the Labour charge ... That is basically an hours charge by a Main Dealer . Parts may be expensive but they will be genuine Yamaha parts and come with a labour and parts guarantee . Yes an independent may be cheaper per hour but i doubt there will be any independent that will give a time frame of 1 hr . And if this is all the bike needs after x amount of years on storage then it is a bargain . So to the OP i would go with what you know and face it buying something else you could be in the same boat . Look at invoice it is the cam chain tensioner not cam chain ... Edited November 24, 2020 by TimR 1 Quote Link to comment Share on other sites More sharing options...
XTreme Posted November 24, 2020 Share Posted November 24, 2020 2 hours ago, fastbob said: You've got to start your journey to mechanical competence somewhere Quote Link to comment Share on other sites More sharing options...
fastbob Posted November 25, 2020 Share Posted November 25, 2020 6 hours ago, Blackholesun said: Ok . Here's a genuine tensioner for £18 . It's held on with two bolts that can be reused . It has a gasket that you can make from cardboard for nothing . Fit as follows . Undo the two bolts and take the old one off . Scrape away any old gasket OR if the gasket is intact just bung a bit of silicone sealant on it . Undo the single bolt on the end of the new one and carefully take out the rod and spring . Push the plunger all the way in and bolt the new tensioner onto the bike . Insert the rod and spring and you will hear a clicking sound . That's the ratchet taking up the slack . Keep the spring pushed in and screw the single bolt back in . This procedure must be followed exactly or you will overstress the camchain . https://www.ebay.co.uk/itm/YAMAHA-YBR-125-CAM-CHAIN-ADJUSTER-TENSIONER-UK-STOCK-/274097052578?_trksid=p2349624.m46890.l49292 1 Quote Link to comment Share on other sites More sharing options...
Blackholesun Posted November 25, 2020 Author Share Posted November 25, 2020 Yes I'm not very savvy when it comes to mechanical stuff..my skills in life lay elsewhere!Anyway yes if this tensioner doesn't work or stop the rattle according to them he said it'll need a complete engine rebuild..is this hyperbole on their part or a likely scenario? Quote Link to comment Share on other sites More sharing options...
fastbob Posted November 25, 2020 Share Posted November 25, 2020 36 minutes ago, Blackholesun said: Yes I'm not very savvy when it comes to mechanical stuff..my skills in life lay elsewhere!Anyway yes if this tensioner doesn't work or stop the rattle according to them he said it'll need a complete engine rebuild..is this hyperbole on their part or a likely scenario? Well if a new tensioner dosen't work then the camchain itself will need replacing which is an extensive job that could easily be described as a complete engine rebuild. So , no , it is not hyperbole . Quote Link to comment Share on other sites More sharing options...
fastbob Posted November 25, 2020 Share Posted November 25, 2020 Here's a thought. https://www.ebay.co.uk/itm/BRAND-NEW-ENGINE-YAMAHA-125cc-YBR-TYPE-NON-GENUINE-/193393301013?_trksid=p2349624.m46890.l49292 Quote Link to comment Share on other sites More sharing options...
Blackholesun Posted November 25, 2020 Author Share Posted November 25, 2020 Thanks I'm going to try to record a video of the engine running later and post it here if it works and see what you all think! 1 Quote Link to comment Share on other sites More sharing options...
Guest Swagman Posted November 25, 2020 Share Posted November 25, 2020 1 hour ago, Blackholesun said: Thanks I'm going to try to record a video of the engine running later and post it here if it works and see what you all think! I’m sure you have the capabilities to change the cam chain tensioner it isn’t a hard job at all. Quote Link to comment Share on other sites More sharing options...
Blackholesun Posted November 25, 2020 Author Share Posted November 25, 2020 thanks to everyone who has taken the time to reply due to the size i've uploaded to youtube on this link hopefully if anyone would mind taken a look and telling me what they think cheers Quote Link to comment Share on other sites More sharing options...
Tiggie Posted November 25, 2020 Share Posted November 25, 2020 Anyone else thinking tappets need adjusting? Quote Link to comment Share on other sites More sharing options...
fastbob Posted November 25, 2020 Share Posted November 25, 2020 1 hour ago, Tiggie said: Anyone else thinking tappets need adjusting? It would do no harm to rule that out . 1 Quote Link to comment Share on other sites More sharing options...
KiwiBob Posted November 25, 2020 Share Posted November 25, 2020 Here you go ... Yamaha YBR 125 Valve Clearance Check (tappets) - YouTube 1 Quote Link to comment Share on other sites More sharing options...
KiwiBob Posted November 25, 2020 Share Posted November 25, 2020 You could try this? .. Quick Tip - Reduce Timing Chain Noise in Yamaha YBR YBRG YB125Z - YouTube Quote Link to comment Share on other sites More sharing options...
Davidtav Posted November 25, 2020 Share Posted November 25, 2020 I used to have a Yamaha SR 125 and it always sounded just like the clip. From new. … I think it’s the same engine? I personally wouldn’t worry too much. Quote Link to comment Share on other sites More sharing options...
fastbob Posted November 25, 2020 Share Posted November 25, 2020 To the OP , have you tried sitting on it with your helmet on ? What does it sound like then ? My point is , a lot of bikes sound horrible when you're not used to listening to them in a confined space without the filter of a helmet . 1 Quote Link to comment Share on other sites More sharing options...
James in Brum Posted November 25, 2020 Share Posted November 25, 2020 Mine sounds terrible when I listen, well not terrible but it sounds like lots of metal bits all moving. Works fine, Quote Link to comment Share on other sites More sharing options...
Blackholesun Posted November 25, 2020 Author Share Posted November 25, 2020 Tbh I never thought much of the sound as it's my 1st bike I sort of just assumed as it's a small engine that's what it's meant to sound like! When I'm riding it it sounds fine to me ! Quote Link to comment Share on other sites More sharing options...
Stu Posted November 25, 2020 Share Posted November 25, 2020 8 minutes ago, Blackholesun said: Tbh I never thought much of the sound as it's my 1st bike I sort of just assumed as it's a small engine that's what it's meant to sound like! When I'm riding it it sounds fine to me ! Have you had the work done yet? Quote Link to comment Share on other sites More sharing options...
fastbob Posted November 25, 2020 Share Posted November 25, 2020 31 minutes ago, Blackholesun said: Tbh I never thought much of the sound as it's my 1st bike I sort of just assumed as it's a small engine that's what it's meant to sound like! When I'm riding it it sounds fine to me ! So what's this thread all about then ? Quote Link to comment Share on other sites More sharing options...
bonio Posted November 25, 2020 Share Posted November 25, 2020 @fastbob Seems to me the bloke is confused cos he's been told his bike not to ride the bike because it's unsafe, but it seems ok to him. I think I'd be the same in his shoes. Quote Link to comment Share on other sites More sharing options...
James in Brum Posted November 25, 2020 Share Posted November 25, 2020 Yup I’d be the same. If the flux capacitor does need changing, is it dangerous or just going to break? Quote Link to comment Share on other sites More sharing options...
iangaryprice Posted November 25, 2020 Share Posted November 25, 2020 6 hours ago, Tiggie said: Anyone else thinking tappets need adjusting? Tappet clearance is the first thing to check. It costs nothing. It difficult to tell with a video recording, but I think I can hear an exhaust blow as well. To test for blowing exhaust, with cold engine running, rag over exhaust end to buld up backpressure feel around exhaust for leaks. 1 Quote Link to comment Share on other sites More sharing options...
Blackholesun Posted November 26, 2020 Author Share Posted November 26, 2020 thanks for all the tips...yes i'm confused a bit from what the dealership told me...will give the videos a go... Quote Link to comment Share on other sites More sharing options...
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